A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5915-00-542-2179
NSN 6610-01-369-5393
NSN 6150-01-051-0386
NSN 5895-01-359-8704
NSN 6220-01-529-1169
NSN 5990-01-097-4721
NSN 5895-00-926-0806
NSN 5945-00-998-4872
NSN 5998-01-514-7857
NSN 5910-01-325-9381
NSN 5925-01-429-7699
NSN 5985-01-272-2516